MC3410 Datasheet, PDF (17/75 Pages) NXP Semiconductors – 10-Bit high-speed multiplying D/A converter

MC3410 3-Axis Accelerometer
Datasheet
5 GENERAL OPERATION
The internal sampling rate range is fixed at 1024 samples per second. The resulting sensor
readings appear as either 10-bit or 14-bit values, depending upon the selection chosen.
5.1 SENSOR SAMPLING
Measurement data is stored in the “extended” registers XOUT_EX, YOUT_EX, and ZOUT_EX.
The byte with the lower address of the byte pair is the least significant byte while the byte with
the next higher address is the most significant byte. The 10-bit or 14-bit measurement is
represented as 2’s complement format.
10-bit samples occupy bits [9:0], with bits [15:9] occupied by the sign bit.
14-bit samples occupy bits [13:0], with bits [15:13] occupied by the sign bit.
The desired resolution and full scale acceleration range of ± 2g, ± 4g or ± 8g are set in
OUTCFG: Output Configuration Register.
The device sample rate is fixed at 1024 samples/second. The features Tap, Shake, Drop and
Orientation detection are available.
Acceleration
Value
per bit
Full Scale Full Scale
Negative Positive
Resolution Range (mg/LSB) Reading Reading
Comments
10-bit
10-bit
10-bit
± 2g
~3.9
Signed, 2’s complement
number, results in registers
± 4g
~7.8
0xFE00
0x01FF
XOUT_EX_L, XOUT_EX_H
YOUT_EX_L, YOUT_EX_H
(-512)
(+511)
ZOUT_EX_L, ZOUT_EX_H
± 8g
~15.6
(Sign-extended. Integer
interpretation also shown)
14-bit
0xE000
± 8g
~0.98
(-8192)
Table 8. Summary of Resolution, Range, and Scaling
0x1FFF
(+8191)
Signed, 2’s complement
number, results in registers
XOUT_EX_L, XOUT_EX_H
YOUT_EX_L, YOUT_EX_H
ZOUT_EX_L, ZOUT_EX_H
(Sign-extended. Integer
interpretation also shown)
Based upon the intended application, filtering of the data samples may be desired. The device
has several low-pass filter (LPF) options for the raw sample data, intended to filter out
mCube Proprietary.
APS-048-0010v2.2
© 2014 mCube Inc. All rights reserved.
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